I am going through the technical specification and I obviously totally misunderstood the position of electrodes (I just saw pieces of metal in the frontal band and said Hey, so here are the four electrodes and one reference). I was wrong. So the second couple of electrodes is placed in TP9 and 10? How do they work? It looks just like an ordinary silicone.
It is a beginner's question, sorry for that in advance.